Invited Review, to appear in Planetary Nebulae beyond
the Milky Way, ESO Astrophysics Symposia, eds. Stanghellini, L., Walsh,
J. R., Douglas, N. G.
astro-ph/0502037
For a PDF version of the article, click
here.
MODELLING KINEMATICS AND DARK MATTER:
THE HALOS OF ELLIPTICAL GALAXIES
*
Ortwin Gerhard
Astronomisches
Institut,
Universität Basel,
Venusstrasse 7,
CH-4102 Switzerland
Abstract.
This review is focussed on the outer halos of elliptical galaxies.
Its emphasis is on (i) planetary nebulae as test particles to trace the
stellar kinematics at large radii, (ii) the observed angular momentum
in elliptical galaxy halos and its theoretical relevance, (iii) dynamical
modelling of stellar-kinematic data, and (iv) a discussion of the
evidence for dark matter halos in ellipticals from a wide range of
measurements.
Table of Contents
INTRODUCTION
- PLANETARY NEBULAE AS KINEMATIC TRACERS
- Does the PN Number Density Follow Light?
- Do the PN Kinematics Follow the Absorption Line
Stellar Kinematics?
- How Many PNe Velocities Are Needed for Orbital
and Potential Analysis?
- ANGULAR MOMENTUM IN THE OUTER PARTS OF ELLIPTICALS
- DYNAMICAL ANALYSIS OF KINEMATIC DATA
- THE DYNAMICS AND DARK MATTER HALOS OF ELLIPTICAL
GALAXIES
- Results from Dynamical Analysis of Absorption Line
Profiles
- Results from Analyses Including PN or GC
Velocities
- Results from Gas Rotation Measurements
- Results from Modelling X-ray Data
- Conclusion
- REFERENCES
* To appear in: Planetary
Nebulae beyond the Milky Way, ESO Astrophysics Symposia,
eds. Stanghellini, L., Walsh, J. R., Douglas, N. G., Springer, Heidelberg.
Back.
